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YAK CO - TERRACE HEIGHTS

Washington — Community Water System — PWSID: WA5306029

System Information

PWSIDWA5306029
System NameYAK CO - TERRACE HEIGHTS
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedOct 29, 1981
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CityYakima
ZIP Code98901
Address128 N 2Nd-4th Floor Courthouse
OrganizationYAK CO - TERRACE HEIGHTS
Phone—

Population & Service

Population Served8,410
Service Connections2,725

Drinking Water Violations (171)

This water system has 171 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Aug 1, 2023 Aug 31, 2023 Revised Total Coliform Rule MCL Yes No — — — Resolved Aug 31, 2023 Revised Total Coliform Rule
Oct 1, 2022 Oct 31, 2022 Revised Total Coliform Rule MON No No — — — Resolved Oct 31, 2022 Revised Total Coliform Rule
Jul 1, 2014 — Consumer Confidence Rule Other No No — — — Resolved Sep 1, 2014 Consumer Confidence Rule
Apr 1, 2008 Jun 30, 2008 ETHYLENE DIBROMIDE MR No Yes — 0.00005 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 1,2-DIBROMO-3-CHLOROPROPANE MR No Yes — 0.0002 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Apr 1, 2008 Jun 30, 2008 Diquat MR No Yes — 0.02 mg/L — Archived Jun 30, 2008 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Oct 1, 2007 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jul 1, 2007 Sep 30, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Sep 30, 2007 Synthetic Organic Chemicals
Jul 1, 2007 Sep 30, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Sep 30, 2007 Synthetic Organic Chemicals
Jul 1, 2007 Sep 30, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Sep 30, 2007 Synthetic Organic Chemicals
Jul 1, 2007 Sep 30, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Sep 30, 2007 Synthetic Organic Chemicals
Jan 1, 2007 Dec 31, 2007 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals
Jan 1, 2007 Dec 31, 2007 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2007 Volatile Organic Chemicals

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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